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Durably engineered - durable steel is used to construct the inside framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs.

A mattress game-changer – this box spring is built with all of the trusted support we put into our ever-so-popular platform beds, well, reliable, closely spaced wood slats and a cleverly developed, and this box spring has the total package - an unwavering steel structure, package.
Low profile design - a 4 inch height is perfect for taller mattresses or for those who enjoy their bed lower to the floor. Durably engineered - durable steel and wood slats are used to construct the interior framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs.

Box dimensions: 84x72x8. Will work great with higher profile mattresses: the 4 inch box spring will give a perfect height for you mattress. Works with all mattresses: this box spring is good for all mattresses.

Easy to setup : easy to assemble instant foundation is a low cost solution that provides perfect support for all mattress types. The strong and sturdy : foundation supports heavier mattresses including Memory Foam and Latex and actually increases the mattress's longevity by preventing sagging.

Will work great with higher profile mattresses: the 4 inch box spring will give a perfect height for you mattress. Easy to carry: box spring comes split in two to easily pass through narrow hallways & doors.

King size measurement: length-80 inches x Width-76 x Height-4 Weighs-24 lbs. Strong and sturdy: made from strong traditional wood structure, made of light yet dense lumber which prevents the box to loosen up and crack and keeps the mattress in perfect shape.

Box dimensions: 84x72x8. Easy to carry: box spring comes split in two to easily pass through narrow hallways & doors. Strong and sturdy: made from strong traditional wood structure, made of light yet dense lumber which prevents the box to loosen up and crack and keeps the mattress in perfect shape.

Easy to assemble: Tools, hardware, and easy to follow instructions are included. Neutral poly cover: covers frame tightly and attaches with Velcro to prevent slippage, neutral cover compliments any mattress. Worry free warranty: 3 year limited warranty.

Works with all mattresses: this box spring is good for all mattresses. Strong and sturdy: made from strong traditional wood structure, made of light yet dense lumber which prevents the box to loosen up and crack and keeps the mattress in perfect shape.

Worry-free 5 year limited warranty included; box spring only, a bed frame or platform bed is required to support this foundation and is sold separately.
1. Zinus
#ad
ZINUS 5 Inch Metal Smart Box Spring / Mattress Foundation / Strong Metal Frame / Easy Assembly, California King
#adZinus #ad - Thoughtfully packaged - All parts, tools and instructions are packed into one compact box that ships straight to your door. Worry-free 5 year limited warranty included; box spring only, a bed frame or platform bed is required to support this foundation and is sold separately.Durably engineered - durable steel is used to construct the inside framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs.
More information #ad
The last box spring you’ll ever need - unlike a traditional box spring, the Smart box spring is made of solid steel that comes together in no time and is backed by our Zinus “Peace of Mind” 5 year warranty. Low profile design - a 5 inch height is perfect for taller mattresses or for those who enjoy their bed lower to the floor.Brand | Zinus #ad |
Manufacturer | Zinus #ad |
Height | 5 Inches |
Length | 83 Inches |
Weight | 44.49 Pounds |
Width | 71.5 Inches |
Part Number | OLB-ABS-5CK |
Model | OLB-ABS-5CK |
Warranty | Worry-free 5 year limited warranty included. |
More information #ad
2. Zinus
#ad
California King, ZINUS Metal Box Spring with Wood Slats /4 Inch Mattress Foundation / Sturdy Steel Structure / Easy Assembly
#adZinus #ad - Thoughtfully packaged - All parts, tools and instructions are packed into one compact box that ships straight to your door. Worry-free 5 year limited warranty included; box spring only, a bed frame or platform bed is required to support this foundation and is sold separately.A mattress game-changer – this box spring is built with all of the trusted support we put into our ever-so-popular platform beds, well, reliable, closely spaced wood slats and a cleverly developed, and this box spring has the total package - an unwavering steel structure, package.
More information #ad
Low profile design - a 4 inch height is perfect for taller mattresses or for those who enjoy their bed lower to the floor. Durably engineered - durable steel and wood slats are used to construct the interior framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs.
Brand | Zinus #ad |
Manufacturer | Zinus #ad |
Height | 4 Inches |
Length | 83 Inches |
Weight | 57.32 Pounds |
Width | 71.5 Inches |
Part Number | AZ-HBBS-4CK |
Model | AZ-HBBS-4CK |
Warranty | Worry-free 5 year limited warranty included. |
More information #ad
3. Greaton
#ad
California King, Greaton Fully Assembled Split Low Profile Wood Traditional Box Spring/Foundation For Mattress Set, 72x84
#adGreaton #ad - Easy to carry: box spring comes split in two to easily pass through narrow hallways & doors. No assembly required: shipped fully assembled and ready to use, open the box and the mattress is ready to use.Box dimensions: 84x72x8. Will work great with higher profile mattresses: the 4 inch box spring will give a perfect height for you mattress. Works with all mattresses: this box spring is good for all mattresses.
More information #ad
Strong and sturdy: made from strong traditional wood structure, made of light yet dense lumber which prevents the box to loosen up and crack and keeps the mattress in perfect shape. California king size measurement: length-84 inches x Width-72 x Height-4 Weighs-24 lbs. Fast shipping: Very Compact resulting fast and easy shipment.Brand | Greaton #ad |
Manufacturer | Greaton #ad |
Height | 8 Inches |
Length | 72 Inches |
Weight | 1 Pounds |
Width | 84 Inches |
Part Number | 448v-6/0-3lps |
Model | 448v-6/0-3lps |
More information #ad
4. Spring Coil
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Spring Coil 5-Inch Easy Wood Box Spring With Simple Assembly California King,Beige
#adSpring Coil #ad - Easy to delivery : package delivers to your doorstep and fits easily through tight hallways or narrow stairwells, Tools and instructions are included.Easy to setup : easy to assemble instant foundation is a low cost solution that provides perfect support for all mattress types. The strong and sturdy : foundation supports heavier mattresses including Memory Foam and Latex and actually increases the mattress's longevity by preventing sagging.
More information #ad
All mattress type : high profile foundation is durable, frame, and supports all mattress types mattress, noise free, and headboard sold separately. Item includes : 1 Foundation Frame is not included.Brand | Spring Coil #ad |
Manufacturer | Spring Coil #ad |
Height | 5 Inches |
Length | 83.5 Inches |
Weight | 79 Pounds |
Width | 71.5 Inches |
Part Number | 6500-6/0 |
Model | Easy Wood Box Spring |
More information #ad
5. Spinal Solution
#ad
California King, Spinal Solution 4-Inch Fully Assembled Wood Split Low Profile Traditional Box Spring/Foundation For Mattress
#adSpinal Solution #ad - Box dimensions: 84x72x8. Works with all mattresses: this box spring is good for all mattresses. No assembly required: shipped fully assembled and ready to use, open the box and the mattress is ready to use.Will work great with higher profile mattresses: the 4 inch box spring will give a perfect height for you mattress. Easy to carry: box spring comes split in two to easily pass through narrow hallways & doors.
More information #ad
Strong and sturdy: made from strong traditional wood structure, made of light yet dense lumber which prevents the box to loosen up and crack and keeps the mattress in perfect shape. California king size measurement: length-84 inches x Width-72 x Height-4 Weighs-24 lbs.Brand | Spinal Solution #ad |
Manufacturer | Spinal Solution #ad |
Height | 4 Inches |
Length | 84 Inches |
Weight | 50 Pounds |
Width | 72 Inches |
Part Number | 440B-6/0-3LPS |
Model | 10-Inch |
More information #ad
6. Greaton
#ad
King Size, Greaton 4-Inch Low Profile Split Wood Traditional Boxspring/Foundation
#adGreaton #ad - Fast shipping: Very Compact resulting fast and easy shipment. Box dimensions: 80x76x8. Works with all mattresses: this box spring is good for all mattresses.King size measurement: length-80 inches x Width-76 x Height-4 Weighs-24 lbs. Strong and sturdy: made from strong traditional wood structure, made of light yet dense lumber which prevents the box to loosen up and crack and keeps the mattress in perfect shape.
More information #ad
No assembly required: shipped fully assembled and ready to use, open the box and the mattress is ready to use. Easy to carry: box spring comes split in two to easily pass through narrow hallways & doors. Will work great with higher profile mattresses: the 4 inch box spring will give a perfect height for you mattress.Brand | Greaton #ad |
Manufacturer | Greaton #ad |
Height | 4 Inches |
Length | 79 Inches |
Weight | 1 Pounds |
Width | 78 Inches |
Part Number | 301v-6/6-3lps |
Model | 4-Inch |
More information #ad
7. Mattress Solution
#ad
California King, Tomorrow Dream Collection, Mattress Solution Fully Assembled Low Profile Split Wood Traditional Boxspring/Foundation
#adMattress Solution #ad - Works with all mattresses: this box spring is good for all mattresses. Will work great with higher profile mattresses: the 4 inch box spring will give a perfect height for you mattress.Box dimensions: 84x72x8. Easy to carry: box spring comes split in two to easily pass through narrow hallways & doors. Strong and sturdy: made from strong traditional wood structure, made of light yet dense lumber which prevents the box to loosen up and crack and keeps the mattress in perfect shape.
More information #ad
Fast shipping: Very Compact resulting fast and easy shipment. No assembly required: shipped fully assembled and ready to use, open the box and the mattress is ready to use. California king size measurement: length-84 inches x Width-72 x Height-4 Weighs-24 lbs.Brand | Mattress Solution #ad |
Manufacturer | Mattress Solution #ad |
Height | 4 Inches |
Length | 84 Inches |
Weight | 60 Pounds |
Width | 72 Inches |
Part Number | 302z-6/0-3lps |
Model | 4-Inch |
More information #ad
8. Classic Brands
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Classic Brands Instant Foundation Low Profile 4-Inch Box-Spring Replacement, California King
#adClassic Brands #ad - Solid wood slats: 12 solid wood slats are spaced 3. 4" apart and held neatly together with a strap. Low profile design: Durable and noise free 4-inch foundation is ideal for higher profile mattresses.Easy to assemble: Tools, hardware, and easy to follow instructions are included. Neutral poly cover: covers frame tightly and attaches with Velcro to prevent slippage, neutral cover compliments any mattress. Worry free warranty: 3 year limited warranty.
More information #ad
Natural wood foundation: Strong pine wood structure supports up to 550 lbs. 5 star customer service: Available 7 days a week. 72" w x 84" l x 4" H. Compact packaging: delivers directly to your door into one compact box, fits easily through tight hallways or narrow stairwells. Foundation only: mattress, frame, and headboard sold separately, bed frame is highly recommended.Brand | Classic Brands #ad |
Manufacturer | Classic Brands #ad |
Height | 4 Inches |
Length | 84 Inches |
Weight | 52 Pounds |
Width | 72 Inches |
Part Number | 123001-5070 |
Model | 123001-5070 |
More information #ad
9. Greaton
#ad
1, King Size, Greaton 4-Inch Wood Split Low Profile Traditional Box Spring/Foundation for Mattress
#adGreaton #ad - Easy to carry: box spring comes split in two to easily pass through narrow hallways & doors. Box dimensions: 80x76x8. Will work great with higher profile mattresses: the 4 inch box spring will give a perfect height for you mattress.Works with all mattresses: this box spring is good for all mattresses. Strong and sturdy: made from strong traditional wood structure, made of light yet dense lumber which prevents the box to loosen up and crack and keeps the mattress in perfect shape.
More information #ad
Fast shipping: Very Compact resulting fast and easy shipment. No assembly required: shipped fully assembled and ready to use, open the box and the mattress is ready to use. King size measurement: length-80 inches x Width-76 x Height-4 Weighs-24 lbs.Brand | Greaton #ad |
Manufacturer | Greaton #ad |
Height | 4 Inches |
Length | 79 Inches |
Weight | 24 Pounds |
Width | 78 Inches |
Part Number | 9030v-6/6-3LPS |
Model | 4-Inch |
More information #ad
10. Zinus
#ad
Split King, ZINUS No Assembly Metal Box Spring / 4 Inch White Mattress Foundation / Sturdy Metal Structure
#adZinus #ad - Thoughtfully packaged - All parts and instructions are packed into one compact box that ships straight to your door. As simple as unfold & unwind - requiring no tools and zero tedious assembly, the innovative No Assembly box spring requires only unfolding to become bedtime ready; the hardest part will be taking it out of the box.Worry-free 5 year limited warranty included; box spring only, a bed frame or platform bed is required to support this foundation and is sold separately.
More information #ad
Durably engineered - durable steel is used to construct the interior framework of this reliable foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs; King and Cal King sizes are split versions. Low profile design - a 4 inch height is perfect for taller mattresses or for those who enjoy their bed lower to the floor.Brand | Zinus #ad |
Manufacturer | Zinus #ad |
Height | 4 Inches |
Length | 79 Inches |
Weight | 50.79 Pounds |
Width | 75.5 Inches |
Part Number | OLB-BIFD-4K |
Model | OLB-BIFD-4K |
Warranty | 5-year warranty. |
More information #ad